int decodeMPEG(struct AUDIO_HEADER *header)
{
int cnt, g, snd_eof;
/*
* decoder loop **********************************
*/
snd_eof=0;
cnt=0;
while (!snd_eof)
{
while (!snd_eof && ready_audio())
{
if ((g=gethdr(header))!=0)
{
report_header_error(g);
snd_eof=1;
break;
}
if (header->protection_bit==0)
getcrc();
#if 0
statusDisplay(header,cnt);
#endif
if (header->layer==1)
{
if (layer3_frame(header,cnt))
{
yell(" error. blip.");
return -1;
}
}
else if (header->layer==2)
{
if (layer2_frame(header,cnt))
{
yell(" error. blip.");
return -1;
}
}
cnt++;
}
}
return 0;
}
/*
* TODO: add some kind of error reporting here
*/
void play(char *inFileStr)
{
char *f;
long totalframes = 0;
long tseconds = 0;
struct AUDIO_HEADER header;
int bitrate, fs, g, cnt = 0;
while ((f = new_next_arg(inFileStr, &inFileStr)))
{
if (!f || !*f)
return;
if ((in_file=fopen(f,"r"))==NULL)
{
if (!do_hook(MODULE_LIST, "AMP ERROR open %s", f))
put_it("Could not open file: %s\n", f);
continue;
}
filesize = file_size(f);
initialise_globals();
if ((g=gethdr(&header))!=0)
{
report_header_error(g);
continue;
}
if (header.protection_bit==0)
getcrc();
if (setup_audio(&header)!=0)
{
yell("Cannot set up audio. Exiting");
continue;
}
filesize -= sizeof(header);
switch (header.layer)
{
case 1:
{
if (layer3_frame(&header,cnt))
{
yell(" error. blip.");
continue;
}
break;
}
case 2:
{
if (layer2_frame(&header,cnt))
{
yell(" error. blip.");
continue;
}
break;
}
default:
continue;
}
bitrate=t_bitrate[header.ID][3-header.layer][header.bitrate_index];
fs=t_sampling_frequency[header.ID][header.sampling_frequency];
if (header.ID)
framesize=144000*bitrate/fs;
else
framesize=72000*bitrate/fs;
totalframes = (filesize / (framesize + 1)) - 1;
tseconds = (totalframes * 1152/
t_sampling_frequency[header.ID][header.sampling_frequency]);
if (A_AUDIO_PLAY)
{
char *p = strrchr(f, '/');
if (!p) p = f; else p++;
if (!do_hook(MODULE_LIST, "AMP PLAY %lu %lu %s", tseconds, filesize, p))
bitchsay("Playing: %s\n", p);
}
/*
*
*/
if (!(fseek(in_file, 0, SEEK_END)))
{
char id3_tag[256];
if (!fseek(in_file, -128, SEEK_END) && (fread(id3_tag,128, 1, in_file) == 1))
{
if (!strncmp(id3_tag, "TAG", 3))
print_id3_tag(in_file, id3_tag);
}
fseek(in_file,0,SEEK_SET);
}
decodeMPEG(&header);
do_hook(MODULE_LIST, "AMP CLOSE %s", f);
close_audio();
fclose(in_file);
}
}
int decodeMPEG_2(int inFilefd)
{
struct AUDIO_HEADER header;
int cnt,g,err=0;
TControlMsg message;
if ((in_file=fdopen(inFilefd,"r"))==NULL) {
return(1);
}
append=data=nch=0; /* initialize globals */
GUI_STOPPED = FALSE;
GUI_PLAYING = TRUE;
GUI_FD_TO_PLAY = -1;
for (cnt=0;;cnt++) {
if ((g=gethdr(&header))!=0) {
switch (g) {
case GETHDR_ERR: die("error reading mpeg bitstream. exiting.\n");
break;
case GETHDR_NS : warn("this is a file in MPEG 2.5 format, which is not defined\n");
warn("by ISO/MPEG. It is \"a special Fraunhofer format\".\n");
warn("amp does not support this format. sorry.\n");
break;
case GETHDR_FL1: warn("ISO/MPEG layer 1 is not supported by amp (yet).\n");
break;
case GETHDR_FF : warn("free format bitstreams are not supported. sorry.\n");
break;
case GETHDR_SYN: warn("oops, we're out of sync.\n");
break;
default:
}
break;
}
if (!(cnt%10)){
GUIstatusDisplay(cnt);
}
if(get_msg(&message) >= 0)
{
int pflag = 0;
cnt = parse_msg(&message,&header,cnt);
if (GUI_PAUSE) {
int flags;
pflag = 1;
#if 0
/* Set stdin to blocking */
if((flags = fcntl(STDIN_FILENO, F_GETFL, 0)) < 0)
perror("fcntl");
flags ^= O_NONBLOCK;
if(fcntl(STDIN_FILENO, F_SETFL, flags) < 0)
perror("fcntl");
#endif
}
while(GUI_PAUSE){
if(get_msg(&message) >= 0)
cnt = parse_msg(&message,&header,cnt);
}
if (pflag) {
int flags;
/* Set stdin to non-blocking */
#if 0
if((flags = fcntl(STDIN_FILENO, F_GETFL, 0)) < 0)
perror("fcntl");
flags |= O_NONBLOCK;
if(fcntl(STDIN_FILENO, F_SETFL, flags) < 0)
perror("fcntl");
#endif
}
if (GUI_STOP || (GUI_FD_TO_PLAY != -1)){
break;
}
}
/* crc is read just to get out of the way.
*/
if (header.protection_bit==0) getcrc();
if (!cnt && A_AUDIO_PLAY) { /* setup the audio when we have the frame info */
if (AUDIO_BUFFER_SIZE==0)
audioOpen(t_sampling_frequency[header.ID][header.sampling_frequency],
(header.mode!=3),
A_SET_VOLUME);
else
audioBufferOpen(t_sampling_frequency[header.ID][header.sampling_frequency],(header.mode!=3),A_SET_VOLUME);
}
if (layer3_frame(&header,cnt)) {
warn(" error. blip.\n");
err=1;
break;
}
}
fclose(in_file);
if (A_AUDIO_PLAY)
if (AUDIO_BUFFER_SIZE!=0)
audioBufferClose();
else
audioClose();
else
fclose(out_file);
if (!(GUI_STOP) && (GUI_FD_TO_PLAY == -1)) {
/* We've reached the end of the track, notify the jukebox...
*/
TControlMsg rmsg;
rmsg.type = MSG_NEXT;
rmsg.data = 0;
send_msg(&rmsg, TRUE);
}
GUI_STOPPED = TRUE;
GUI_PLAYING = FALSE;
return(err);
}
